Bell in Vacuum Jar, Acrylic, 4-6V DC Pack Size_100 Studies oblique collisions between steel

Studies oblique collisions between steel balls on a flat surface

exposing the full urinary tract for combined anatomy and physiology teaching at 15 by 9 inches

varying length isolating density as the single variable across materials

this concave glass mirror at 100mm focal length runs at f/1 for vivid real-image demos and converging-reflection work

demonstrating mechanical-to-electrical energy conversion as the crank lights the bulb

Bell in Vacuum Jar, Acrylic, 4-6V DC Pack Size_100 Studies oblique collisions between steelAcrylic bell in vacuum jar with an internal 4 6V DC electric bell that fades and falls silent as the enclosed air is removed, visualizing sound transmission dependence on a medium.